Patek Philippe has reworked one of its grand classics, endowing it with a white-gold case and an olive green sunburst dial with a black gradation to the periphery. It is a chord of colors that is both contemporary and timeless. This new Ref. 5204G-001 split-seconds chronograph with perpetual calendar features the manually wound caliber CHR 29-535 PS Q movement, traditional architecture, and seven patented innovations. The new model combines two of Patek Philippe’s most coveted grand complications.

Watch
Manually wound mechanical movement. 
Caliber : CHR 29-535 PS Q. 
Split-Seconds chronograph. 
Instantaneous 30-minute counter. 
Perpetual calendar. 
Day, month, leap year and day/night indication displayed in apertures. 
Date indicated by hand. 
Moon phases. 
Small seconds.
Dial : Olive green sunburst, black-gradient rim, gold applied baton-style faceted hour markers with luminescent coating. 18K gold dial plate.
Case : White gold. 
Diameter: 40 mm. 
Height: 14.3 mm. 
Water resistant : 30 m. 
Interchangeable solid and sapphire crystal case backs.
Strap : Calfskin, hand-stitched, shiny olive green. 
Fold-over clasp.
Diameter: 32 mm. 
Thickness: 8.7 mm. 
Number of parts: 496. 
Bridges: 12. 
Jewels: 34. 
Power reserve with the chronograph disengaged: min. 55 hours - max. 65 hours. 
Balance: Gyromax®. 
Frequency: 28,800 semi-oscillations/hour (4 Hz). 
Balance spring: Breguet. 
Hallmark: Patek Philippe Seal.